Dynamic magnetic information storage or retrieval – Head – Head accessory
Patent
1988-07-15
1990-09-25
Severin, David J.
Dynamic magnetic information storage or retrieval
Head
Head accessory
360 84, G11B 1561
Patent
active
049597434
ABSTRACT:
A rotary magnetic head drum apparatus is constituted by at least one video head, a rotary drum having a tape running surface and a head mounting surface to which the video head is securely mounted, and a stationary drum provided with a tape guide and a tape running surface. In the rotary magnetic head drum apparatus, the tape running surface or the rotary drum has a lower end portion which is formed with a tapered portion whose diameter becomes gradually smaller along the axis of the rotary drum, and the tapered portion is projected such that its bottom end surface is located below the plane of the head mounting surface.
REFERENCES:
patent: 4306262 (1981-12-01), Takano
patent: 4719528 (1988-01-01), Sato
patent: 4725910 (1988-02-01), Kaku et al.
patent: 4839762 (1989-06-01), Koreda et al.
Ibe Makoto
Kochi Mashanori
Morikawa Juichi
Ozaki Shinji
Takizawa Hitoshi
Hitachi , Ltd.
Severin David J.
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